I have a little problem I can't figure out how to solve.
I have an SQL result with 3 rows and I want to put the id from each row into a static marker ie.
MARKER_1 = 4
MARKER_2 = 5
MARKER_3 = 6
How can I do that so I get my static markers but with dynamic values?
I can't do it with a normal
while($row = mysql_fetch_array($result)) {
}
$i = 1;
while($row = mysql_fetch_array($result)) {
if($i == 1) {
$marker_1 = $row;
} elseif($i == 2) {
$marker_2 = $row;
} elseif($i == 3) {
$marker_3 = $row;
}
$i++;
}
i would recommend using an array like this
$results = array();
while($row = mysql_fetch_array($result)) {
$results[] = $row;
}
and then access it via:
$results[0] // or $results[1] and so on. you can even loop that :)
hope that helps
Hope this helps
while($row = mysql_fetch_array($result)) {
echo "MARKER_".$row['id'];
echo"=". $row['value'];
}
Related
I know the title isn't that good, BUT I really don't know how to describe it in one setence and I need help.
Currently I have this type of disastrous code that count every $type of product there is in the DB (I have 20-30 types, not 2 only):
$cong = 0;
$refr = 0;
if (mysqli_num_rows($result) > 0) {
while ($row = mysqli_fetch_assoc($result)) {
$arr[] = $row;
if ($arr[$t]['product_type'] == 'Congélateur') {
$cong += 1;
}
if ($arr[$t]['product_type'] == 'Réfrigérateur') {
$refr += 1;
}
$t++;
}
}
And I do stuff with it after. But I was disgusted to see that code, so I tried to minimize it, but I can't figure it out, I tried that:
<php?
$t = 0;
$type = array(
"cong" => "Congélateur",
"refr" => "Réfrigérateur",
);
extract($type, EXTR_PREFIX_SAME, "");
if (mysqli_num_rows($result) > 0) {
foreach ($type as $type_n => $type_m) {
$$type_n = 1;
while ($row = mysqli_fetch_assoc($result)) {
$arr[] = $row;
foreach ($type as $type_n2 => $type_m2) {
if ($arr[$t]['product_type'] == $type_m2) {
$$type_n++;
}
}
$t++;
}
echo $type_n . "=" . $$type_n . "<br>";
}
}
?>
Output:
cong=9
refr=1
What we should expect regarding the DB (In the database, there's 2 cong and 6 refr):
cong=2
refr=6
Any sugestion? Thank you!
You're really making this more complicated than it needs to be. Variable variables are almost never the solution and can always be replaced with an array.
The code you're working with makes no sense, why is it assigning $row to another array and then using a counter to access it? The answer you accepted includes 4 loops, one of them nested.
if (mysqli_num_rows($result) === 0) {
// always exit early rather than indent yourself to death
return false;
}
while ($row = mysqli_fetch_assoc($result)) {
$type = $row["product_type"];
$counts[$type] = ($counts[$type] ?? 0) + 1;
}
print_r($counts);
Demo: https://3v4l.org/8cuis#focus=7.3.28
Counters (which count the type names in your example) should be initialised to 0 not to 1.
You also need to increment $$type_n2 in DB read loop. I'd avoid variable variables if possible.
<php?
$t = 0;
$type = array(
"cong" => "Congélateur",
"refr" => "Réfrigérateur",
);
extract($type, EXTR_PREFIX_SAME, "");
if (mysqli_num_rows($result) > 0) {
foreach ($type as $type_n => $type_m) {
$$type_n = 0;
}
while ($row = mysqli_fetch_assoc($result)) {
$arr[] = $row;
foreach ($type as $type_n2 => $type_m2) {
if ($arr[$t]['product_type'] == $type_m2) {
$$type_n2++; // not $$type_n
}
}
$t++;
}
foreach ($type as $type_n => $type_m) {
echo $type_n . "=" . $$type_n . "<br>";
}
}
?>
I want to display the values of my array. but instead of displaying:
1509 1510 1511 it display ArrayArrayArray. What does it mean?
include("db_PSIS.php");
$sql_dc = "SELECT Child, Datecode
FROM traveller_merging15
WHERE Parent='" . $_REQUEST["txt_traveller_no"] . "'
ORDER BY Merge_ID ASC";
$res_dc = mysql_query($sql_dc);
$dcode1 = $row_dc['Datecode'];
$storeArray = array();
if (!$res_dc) {
echo "No data fetched!";
} else {
while ($row_dc = mysql_fetch_array($res_dc, MYSQL_ASSOC)) {
$storeArray[] = $dcode1;
echo "{$storeArray} <br>";
}
//$str_dc=implode(",",$storeArray);
//echo $str_dc;
}
You are assign the value of $row_dc['Datecode']; before fetch data from database. You need to do fetch data inside while loop and echo it
$res_dc = mysql_query($sql_dc);
if (!$res_dc) {
echo "No data fetched!";
} else {
while ($row_dc = mysql_fetch_array($res_dc, MYSQL_ASSOC)) {
echo $row_dc['Datecode'];
}
}
Note:- mysql is deprecated instead use mysqli or PDO
else {
while ($row_dc = mysql_fetch_array($res_dc, MYSQL_ASSOC)) {
$storeArray[] = $dcode1;
echo "{$storeArray} <br>";
}
instead try
else {
while ($row_dc = mysql_fetch_array($res_dc, MYSQL_ASSOC)) {
$storeArray[] = $dcode1;
echo "{$storeArray[0]} <br>";
}
Try this,
else {
while ($row_dc = mysql_fetch_array($res_dc, MYSQL_ASSOC)) {
$child = $row_dc['Child'];
$Datecode = $row_dc['Datecode'];
echo "$child <br> $Datecode";
}
if you are getting more that 1 row, use for() loop
else {
while ($row_dc = mysql_fetch_array($res_dc, MYSQL_ASSOC)) {
$count = count($row_dc);
for($i = 0; $i < $count; $i ++){
$child = $row_dc[$i]['Child'];
$Datecode = $row_dc[$i]['Datecode'];
echo "$child <br> $Datecode";
}
}
-first array don't print value using echo
-use print_r($array) to print key value pair(print a array)
your solution is
$i = 0;
while ($row_dc = mysql_fetch_array($res_dc, MYSQL_ASSOC)) {
$storeArray[$i] = $dcode1;
echo $storeArray[$i].'<br>';
$i++;
}
NOTE::-- Use single Quote instead of double Quote and mysql is deprecated instead use mysqli or PDO
This is my partial code:
while($row = $db->fetch_array($query))
{
echo $row['row_name'];
}
How can I make it so it will add a break tag after each result, but not the last result?
Put the output into an array, then join the array with implode:
$rows = array();
while($row = $db->fetch_array($query))
{
$rows[] = $row['row_name'];
}
echo implode('<br/>', $rows);
You could do this. No arrays or counters.
if($row = $db->fetch_array($query))
{
do {
echo $row['row_name']
} while($row = $db->fetch_array($query) && print("<br />"));
}
for ($idx = 0; $row = $db->fetch_array($query); $idx++)
{
if ($idx > 0) { echo "<br/>"; }
echo $row['row_name'];
}
I'm looping through some mysql results and need to add <span id=bottom></span> to each of them except the last row. What's the easiest way of doing this?
Will I have to count rows and then use a counter and an if/else statement? Or is there an easier method?
Try something like this:
$result = mysql_query($sql);
$list = array();
while($row = mysql_fetch_assoc($result))
{
$list[] = $row;
}
$lastItem = array_pop($list);
foreach($list as $item) {
echo sprintf('<span id="bottom">%s</span>', $item['value']);
}
// do something with the last item..
Not very short, but that would do the trick. Alternatively you could do what you suggested:
$result = mysql_query($sql);
$num = mysql_num_rows($result);
for($i = 0; $i < $num-1; $i++) {
$element = mysql_fetch_assoc($result);
// echo here..
}
$item = mysql_fetch_assoc($result); // fetch last item..
Best wishes,
Fabian
I'm not a PHP expert, but can you put each row in an array? That way to know the length and you can loop through the array.
$result = mysql_query($sql);
$list = array();
while($row = mysql_fetch_assoc($result))
$list[] = $row;
foreach(array_slice($list, 0, -1) as $item) {
echo sprintf('<span id="bottom">%s</span>', $item['value']);
}
// do something with the last item..
You can avoid copying all the data before processing it if you fetch a record in advance before printing it (or the other way round: process the previously fetched record)
foreach( $pdo->query('SELECT x FROM foo') as $r) {
if ( isset($row) ) {
echo '<span>', $row['x'], '</span>';
}
$row = $r;
}
if ( isset($row) ) {
echo $row['x'];
}
Here is the code
$i=0;
while ($row = mysql_fetch_array($result))
{
$output.="idno".$i."=".urlencode($row['usr_id']).
'&'."res".$i."=".urlencode($row['responce']).
'&'."sex".$i."=".urlencode($row['sex']).
'&'."com1".$i."=".urlencode($row['com1']).
'&'."com2".$i."=".urlencode($row['com2']);
$i++;
}
OUTPUT i get idno is part of com2 string how do I seperate them.
You need to add an & when $i is not zero:
$i=0;
while ($row = mysql_fetch_array($result))
{
$output .= ($i ? '&' : '') . "idno".$i."=".urlencode($row['usr_id']).
'&'."res".$i."=".urlencode($row['responce']).
'&'."sex".$i."=".urlencode($row['sex']).
'&'."com1".$i."=".urlencode($row['com1']).
'&'."com2".$i."=".urlencode($row['com2']);
$i++;
}
Another solution would be using an array and join its elements afterwards:
$array = array();
$i = 0;
while ($row = mysql_fetch_array($result)) {
$array[] = "idno$i=".urlencode($row['usr_id']);
$array[] = "res$i=".urlencode($row['responce']);
$array[] = "sex$i=".urlencode($row['sex']);
$array[] = "com1$i=".urlencode($row['com1']);
$array[] = "com2$i=".urlencode($row['com2']);
$i++;
}
$output .= implode('&', $array);
Furthermore you could use the argName[] declaration that PHP will convert into an array when receiving such a request query string.
Or you could do this:
$array = array();
$i = 0;
while ($row = mysql_fetch_array($result)) {
$array["idno$i"] = $row['usr_id'];
$array["res$i"] = $row['responce'];
//etc.
$i++;
}
$output = http_build_query($array);